Variations in the chemical properties of landfill leachate

L. M. CHU, K. C. CHEUNG, Ming Hung WONG

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Abstract

Landfill leachates were collected and their chemical properties analyzed once every two months over a ten-month period from the Gin Drinkers' Bay (GDB) and Junk Bay (JB) landfills. The contents of solids, and inorganic and organic components fluctuated considerably with time. In general, the chemical properties of the two leachates correlated negatively (P<0.05) with the amounts of rainfall prior to the sampling periods. However, magnesium and pH of the leachates remained relatively constant with respect to sampling time. The JB leachate contained higher average contents of solids and inorganic and organic matter than those of GDB with the exception of trace metals. Trace metals were present in the two leachates in trace quantities (<1.0 mg/liter). The concentrations of average ammoniacal nitrogen were 1040 and 549 mg/liter, while chemical oxygen demand (COD) values were 767 and 695 mg/liter for JB and GDB leachates, respectively. These results suggest that the leachates need further treatment before they can be discharged to the coastal waters. Copyright © 1994 Springer-Verlag New York, Inc.

Original languageEnglish
Pages (from-to)105-117
JournalEnvironmental Management
Volume18
Issue number1
DOIs
Publication statusPublished - Jan 1994

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Land fill
Chemical properties
leachate
chemical property
Sampling
Chemical oxygen demand
Biological materials
Rain
Magnesium
Nitrogen
trace metal
inorganic matter
Water
sampling
chemical oxygen demand
Trace metals
landfill leachate
coastal water
landfill
magnesium

Bibliographical note

Chu, L. M., Cheung, K. C., & Wong, M. H. (1994). Variations in the chemical properties of landfill leachate. Environmental Management, 18(1), 105-117. doi: 10.1007/BF02393753

Keywords

  • Landfill leachate
  • Chemical properties
  • Spatial variation
  • Temporal variation
  • Ammoniacal nitrogen
  • Hong Kong